fw/fe310/eos/dev/spi.h


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#include <stdint.h>

#define EOS_SPI_DEV_NET         0
#define EOS_SPI_DEV_EVE         1
#define EOS_SPI_DEV_SDC         2
#define EOS_SPI_DEV_CAM         3
#define EOS_SPI_DEV_HPAMP       4
#define EOS_SPI_DEV_LCD         5

#define EOS_SPI_MAX_DSTACK      3
#define EOS_SPI_DEV_FLAG_NDSEL  0x80

int eos_spi_dev_init(void);
int eos_spi_select(unsigned char dev);
void eos_spi_deselect(void);
void eos_spi_dev_configure(unsigned char dev);

uint8_t eos_spi_dev(void);
uint16_t eos_spi_div(unsigned char dev);
uint8_t eos_spi_csid(unsigned char dev);
uint8_t eos_spi_cspin(unsigned char dev);

void eos_spi_set_div(unsigned char dev, uint16_t div);